HomeOmicron sub-variants BA.4 and BA.5 account for up to 13% of COVID variants in U.S. – CDCThe words “OMICRON SARS-COV-2” are seen reflected in a drop

The words “OMICRON SARS-COV-2” are seen reflected in a drop

FILE PHOTO: The words "OMICRON SARS-COV-2" are seen reflected in a drop from a syringe needle in this illustration taken December 11, 2021. REUTERS/Dado Ruvic/Illustration
FILE PHOTO: A general view of Centers for Disease Control
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